If you request on the sandstorm-dev list (it's a Google Group) an app, someone might want to port it, or add it to the app voting list. If you're developer-inclined, you can even package apps yourself, Sandstorm has pretty decent dev tools.

Though, depending on what you want to monitor, the ideal drivers to let the app talk to things outside of Sandstorm may not be ready yet.

also, Jekyll support pretty please.....